Ryersqn



c. s. RYERSON.

CARBURETER. APPLICAHON FILED MAY 7, 1917.

Patented Aug. 1919.

l idim h i ual.

INVENTOR: UHRRLE 6. Rye/23a ZZ WQ ATTORNEY.

" UNITED STATES PATENT OFFICE.

CHARLES S. RYERSON, OF DETROIT, MICHIGAN, ASSIGNOR TO CADILLAC MOTOR GAB COMPANY, 013 DETROIT, MTGHIGAN, CORPORATION OF MICHIGAN.

CAIRBURETER.

Application filed May 7, 1

To all whom, it may concern:

Be it known that 1, CHARLES S. Bronson, a citizen of the United States, and resident of Detroit, \Vaynecounty, State of Michigan, have invented certain new and useful Improvements in Carburetors, of which the following is a specification.

This invention relates to improvements in carbureters. 1 One of the objects of this invention is to provide improved automatic means for thinning out and breaking up into extremely fine particles, the hydrocarbon fuel before mixing it with air for forming an explosive mixture.

Another object of this invention "is to vaporize a hydrocarbon fuel by discharging it against a rotatable flared tube, whereby the liquid is thinned out while at the same time being carried upwardly and outwardly,

and providing means for subsequently mixing the highly attenuated fuel with air for forming a more stable and efiiciently vaporized combustible mixture.

Another object is to greatly improve the vaporization and carburetion of a hydrocarbon fuel explosive, especially adapted for use in anyintcrnal combustion engine.

These, and various other objects, will more clearly appear from the following descrip;

tion, taken in connection with the drawings 1 which form a part of this specification and in which:

Figure 1 is a longitudinal vertical section of a carburetor, embodying a preferred form of my inventionan Fig. 2 is a side elevation taken substantially at right angles to Fig. 1, showing portions broken away. Referring to the drawings,10 illustrates, a float chamber comprising a shell, having concentrically arranged outer and inner walls 11 and 12 respectively; The upper end of the tapered tubular inner wall 12 is formed interiorly thereof with threads 13 to which-sis connected an exteriorly threaded lower end of a tapered tubular portion 14 of a float chamber cover member 15. It is to'be noted that the flexible gaskets 16 and '50 17- are arranged between the meeting suriaces of the cover member 15 and the inner and outer walls 11 and 12 of the float cham- A conduit 18 is formed in the lower part I of the float chamber with an intake port 19 communicating with its in erior, adjacent Specification of Letters Patent.

Patented Aug. 26, 1919.

917. Serial No. 166,899.

the lower end thercofl The conduit is also provided with a boss 20, arranged in the center of the tubular wall 12. A nozzle 21 is adapted to be mounted in the boss 20 and to be secured therein as by a plug 22.

It is to be noted that the nozzle inlet port 23 is in communication with theconduit inlet port 19 through the fuel passage 18. The tubular wall 12 is formed with a bell shaped month 24, provided with a primar air intake port 25, which is adapted to be regulated by means of a valve 26 threaded as at 27 on a collar 28, which is secured as b a retaining member 29 to a stud 30, preferably formed integral with the lower end of the fuel nozzle plug 22. A spring 31, and the force of gravity tend to return the valve member 26 to itsclosed osition.

It will be noted that t io tubular portions 12 and 14 of the float chamber and its cover member form a venturi'shaped primary air intake passage 32. The usual float 33 is arranged within the chamber 10 pivotally connected as at 34 to an integral lug 35 in the cover member, and ada ted to o erate a needle valve 36 for control ing the f ow of fuel to the ClltLll'lbBl from the supply passage 37.

The mixing chamber 38 is shown as an upwardly extending tubular portion -formed integral with the cover member 15, and

provided with a plurality of circumferentially arranged secondary air ports 39.

sleeve valve 4.0 is adapted to be slidably; arranged in the interior of the mixing 0 amher with its lower end 41 normall resting.

against an interim-1y formed shoul er 42 on the cover member. It is to be noted that a pair of pins are adapted to be inserted 96 through axially extending slots 44, which are formed in the mixing chamber and suitably sccured as by pressed fit or threading them to the sleeve valve 40 for preventing rotation of the sleeve while permitting a reciprocating movement.

Formed adjacent the lower end of the sleeve is an inwardly extending spider 45,

provided with a boss 46, m which may be suitably secured as by brazing, a downwardly extending bearing tube 47. A shaft 48 is adapted to have a radial bearing in the inturned portion 49 of the tube 47. A

collar 50 may be secured as by a pin 51 to the shaft above the cage 45'for taking the downward thrust between the shaft and cage.

An upwardly'flared frusto conical tube 5- air may flow-'therebetween ,for lifting fuel from the nozzle, and that means in the is normally arranged with its lower end 53 adjacent to the outlet 54 of the fuel nozzleand is provided adjacent its lower end with a spider 55, havin a cone shaped member 56 secured to the lower end of the rotatable shaft 48.

It is to be noted that the interior ofthe lower end of the flared tube 52 is of slightly larger diameter than the adjacent portion of the fuel nozzle and surrounds the same in spaced relation, so that a smallquan-tity {if t o formof spiral vanes 57 may be suitably arranged on the exterior of the tube for rotatmg it as air is drawn through the primary air passage.

It will be observed that as the fuel is drawn from the to the interior surface of the rapidly rotating tubeoz by the cone shaped deflector 56 with the result that the fuel will be spread .out over its surface and at the same time carried upwardly and outwardly over the flared walls and finally discharged from the upper lip 58. where it will meet with the incoming primary air, and. also with the auxiliary air after the ports 39 have the reciproeahle sleeve l i It will be. understood that as the velocity of the air passing through 'the primary air passage increases, it will exert a lifting action on the tube 52 i ,addition'to spinning it, with "the result that the upper end ofthe cone shaped deflector 56 will be carried against the bearing 49, and then lift the bearing tube 47 with the sleeve 40, gradually uncovering the auxiliary air ports 39.

The velocity of the rotatingtu'be 52 for a predetermined flow of mixture through the carbureter may be increased by the'provision of another vane or spinner 59 shown as secured to the upper end. of the shaft 48.

The auxiliary air ports 39 may if desired, be

valve 40, by means of manually controlled slidable shutters 60, of any well lmown'form. The upper end of the shaft 48- may be ro tatably mounted in a boss 61 which is 'cen- I trally arranged in a cage 62 of a sleeve 63 which is providedwith a'pair of threaded trunnions 64, extending through oppositely disposed cam slots 65, formed adjacent the upper end of the mixing chamber 38. A collar 66 may be secured as by a pin 67 to the upper end of the shaft 48 above the boss 61 and a spring 68 maybe arranged on the shaft 48 between the lower. end of the-boss 61 and the shoulder. 69 formed at the upper end of the vane 59. i

If it is desired to adjust the position of the rotatable tube for predetermined con ditions, relative just the initial position of the auxiliary air valve 40, the thumb nut 70 may be un- 40 and the tube lift nozzle, it; will be deflected been uncovered by i regulated independently of the sleeve,

jacent the upper end nla tic valve means for regulating said latter to the nozzle 21, or to adscrewed and the sleeve6'3rotated a sufiicient distance to cause the pins 64 to ride upwardly or downwardly in the cam slots 65, thus raising or lowering the shaft 48, sleeve The spring 68 is provided to decrease the 9 ing movement of the sleeve valve and the rotatable tube, after these parts have been raised a predetermined distance. Of course, the weights of the parts which are lifted may be calculated to give a satisfactory floating structure without the use of the spring referred to.

"It will be understood that-while I have arranged to'have' a small quantity of air pass through the rotatable fuel vaporizing tube, it is not necessary that this be done. On the other hand, I prefer that the fuel be discharged onto this tube and thoroughly broken up by centrifugal action and subsequen-tly mixing it with the incoming air, that is, thinning by centrifugal action, the hydrocarbon fuel to substantially a gaseous form before it is mixed with the incoming air to form a combustible mixture. This prevents any undesirable precipitation of', un vaporized liquid particles.

While I have described and will specifically claim what I deem to. be preferred forms and methods of carrying out my invontion, it will of course be obvious to those, skilled in the art that various othe modifications and changes may be made without departing from the spirit and scope thereof.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is: I J

1. In a carburetor, the combination with af'uel nozzle, a rotatable upwardly flared tube, having its lower end arranged adja- 105,

cent the outlet of said nozzle, said carbureter having a primary air intake leading. to the'lower end. of said tube, said tube being provided with vanesgsaid carburetorarlaving an auxiliary of said urbe,and autos 1 'po'rt.

2.,Tn canbureter, the combination with a fuel nozzle, a rotatable upwardly flared tube, having its lower end arranged adja cent the outletof said nozzle, said carbureter having a primary air intake leading to 1 the lower end of said tube, said tube being provided with vanes and saidcarburetor having an auxiliary air port arranged adjacent the upper end of said tube, automatic valve means for regulating said latter port and an inter-connection between said valve and the supportfor said tube, whereby the position of said waive-and said tube respectively are changed simultaneously,

air port arranged ad- 110 adjacent outlet thereof,

and means for adjusting the relation of said 5. In a earbureter having an an passage, tube to said nozzle. in combination with a fuel nozzle and a ro- 4. In a carbureter, the combinwtion with tatahle flared tube arranged in line in said 10 a fuel nozzle, an upwardly flared rotatable passage, and means for rotating said tube 5 tube arranged adjacent the outlet thereof, by the flow of airthrough said passage.

and means" for automatically adjusting the In testimony whereof I nflix my signature. relation of said tube to said nozzle. CHARLES S. RY ERSON. 

